Abstract: A plant comprising a post combustion chamber (1) connected to the combustion chamber of a household rubbish incineration furnace whose hot gases it uses in order, by means of suitable burners (2, 3), to heat sewage sludges and industrial liquids and a circuit for the treatment of the smoke and residues coming from said post combustion.This circuit, which is held under vacuum by a blower (27), comprises a dry cooling tower (7) employing semi-liquid sludges as cooling agent, an absorption tower (15) employing a solution adapted to combine the predominantly acid gases of the smoke, and a separating tower (22) in which the liquids in suspension are removed.A recycle circuit (190) for the solution and liquid separated and means of recovering metallic particles and compounds (10, 12, 29) complete this plant.

Abstract: In a process for incinerating liquid, gaseous or pasty waste, the steps of producing a high frequency vibratory flow of a fluid in a pulverzing chamber, introducing the liquid, gaseous or pasty waste into the chamber to be pulverized in said high frequency vibratory fluid flow, providing combustion air to be drawn into said high frequency vibratory flow to be mixed with said pulverized waste and igniting the mixture of pulverized waste and combustion air. In addition the present arrangement provides a chamber in which waste material is pulverized. The chamber is equipped with first aperture means and second aperture means. Within the chamber and disposed to face said first aperture is a cavity resonator so that when high pressure fluid passes through said first aperture there results a high frequency vibratory flow of said fluid.

Abstract: The present device is a refuse incinerator and includes a combustion chamber, a primary source of air disposed to provide first air to said chamber to effect a first combustion therein; an escape orifice for combustion gases, resulting from the combustion of refuse, provided in at least one of the walls of said chamber; means for supplying pre-heated air from a second source into said combustion chamber in a direction substantially opposite to the direction along which combustion gases with particles suspended therein, from said first combustion, pass toward said escape orifice.